books.google.com - What happens to democracy and free speech if people use the Internet to listen and speak only to the like-minded? What is the benefit of the Internet's unlimited choices if citizens narrowly filter the information they receive? Cass Sunstein first asked these questions in 2001's Republic.com. Now, in...https://books.google.com/books/about/Republic_com_2_0.html?id=_UqMkWbJT7wC&q=bloggers&utm_source=gb-gplus-shareRepublic.com 2.0